Related Clues:

• Partially open
• Just open
• A bit cracked?
• Slightly cracked
• ''When is a door not a door? When it's ---''
• Not quite 2-Down
• Neither open nor shut
• Open slightly
• Left so as to admit some light
• Delta follower
• Clearly not locked
• Barely open
• Allowing entry
• A door that's not a door?
• Propped open